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Diet transcriptome

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https://www.readbyqxmd.com/read/28104576/nitro-fatty-acids-in-plant-signaling-new-key-mediators-of-nitric-oxide-metabolism
#1
REVIEW
Capilla Mata-Pérez, Beatriz Sánchez-Calvo, María N Padilla, Juan C Begara-Morales, Raquel Valderrama, Francisco J Corpas, Juan B Barroso
Recent studies in animal systems have shown that NO can interact with fatty acids to generate nitro-fatty acids (NO2-FAs). They are the product of the reaction between reactive nitrogen species and unsaturated fatty acids, and are considered novel mediators of cell signaling based mainly on a proven anti-inflammatory response. Although these signaling mediators have been described widely in animal systems, NO2-FAs have scarcely been studied in plants. Preliminary data have revealed the endogenous presence of free and protein-adducted NO2-FAs in extra-virgin olive oil (EVOO), which appear to be contributing to the cardiovascular benefits associated with the Mediterranean diet...
January 10, 2017: Redox Biology
https://www.readbyqxmd.com/read/28102700/aryl-hydrocarbon-receptor-deficient-mice-are-protected-from-high-fat-diet-induced-changes-in-metabolic-rhythms
#2
Cassie Jaeger, Canxin Xu, Mingwei Sun, Stacey Krager, Shelley A Tischkau
High fat diet (HFD) consumption alters the synchronized circadian timing system resulting in harmful loss, gain or shift of transcriptional oscillations. The aryl hydrocarbon receptor (AhR) shares structural homology to clock genes, containing both PAS domains and basic helix-loop helix structural motifs, allowing for interaction with components of the primary circadian feedback loop. Activation of AhR alters circadian rhythmicity, primarily through inhibition of Clock/Bmal1-mediated regulation of Per1. AhR-deficient mice are protected from diet-induced metabolic dysfunction, exhibiting enhanced insulin sensitivity and glucose tolerance...
January 19, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28102348/ho-1-inhibits-preadipocyte-proliferation-and-differentiation-at-the-onset-of-obesity-via-ros-dependent-activation-of-akt2
#3
Gabriel Wagner, Josefine Lindroos-Christensen, Elisa Einwallner, Julia Husa, Thea-Christin Zapf, Katharina Lipp, Sabine Rauscher, Marion Gröger, Andreas Spittler, Robert Loewe, Florian Gruber, J Catharina Duvigneau, Thomas Mohr, Hedwig Sutterlüty-Fall, Florian Klinglmüller, Gerhard Prager, Berthold Huppertz, Jeanho Yun, Oswald Wagner, Harald Esterbauer, Martin Bilban
Excessive accumulation of white adipose tissue (WAT) is a hallmark of obesity. The expansion of WAT in obesity involves proliferation and differentiation of adipose precursors, however, the underlying molecular mechanisms remain unclear. Here, we used an unbiased transcriptomics approach to identify the earliest molecular underpinnings occuring in adipose precursors following a brief HFD in mice. Our analysis identifies Heme Oxygenase-1 (HO-1) as strongly and selectively being upregulated in the adipose precursor fraction of WAT, upon high-fat diet (HFD) feeding...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28075380/splenic-immune-response-is-down-regulated-in-c57bl-6j-mice-fed-eicosapentaenoic-acid-and-docosahexaenoic-acid-enriched-high-fat-diet
#4
Nikul K Soni, Alastair B Ross, Nathalie Scheers, Otto I Savolainen, Intawat Nookaew, Britt G Gabrielsson, Ann-Sofie Sandberg
Dietary n-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are associated with reduction of inflammation, although the mechanisms are poorly understood, especially how the spleen, as a secondary lymphoid organ, is involved. To investigate the effects of EPA and DHA on spleen gene expression, male C57BL/6J mice were fed high fat diets (HFD) differing in fatty acid composition, either based on corn oil (HFD-CO), or CO enriched with 2 g/100 g EPA and DHA (HFD-ED), for eight weeks. Spleen tissue was analyzed using transcriptomics and for fatty acids profiling...
January 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28075340/bioactive-nutrients-and-nutrigenomics-in-age-related-diseases
#5
REVIEW
Tania Rescigno, Luigina Micolucci, Mario F Tecce, Anna Capasso
The increased life expectancy and the expansion of the elderly population are stimulating research into aging. Aging may be viewed as a multifactorial process that results from the interaction of genetic and environmental factors, which include lifestyle. Human molecular processes are influenced by physiological pathways as well as exogenous factors, which include the diet. Dietary components have substantive effects on metabolic health; for instance, bioactive molecules capable of selectively modulating specific metabolic pathways affect the development/progression of cardiovascular and neoplastic disease...
January 8, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28071704/high-fat-diet-induced-changes-of-mouse-hepatic-transcription-and-enhancer-activity-can-be-reversed-by-subsequent-weight-loss
#6
Majken Siersbæk, Lyuba Varticovski, Shutong Yang, Songjoon Baek, Ronni Nielsen, Susanne Mandrup, Gordon L Hager, Jay H Chung, Lars Grøntved
Epigenetic factors have been suggested to play an important role in metabolic memory by trapping and maintaining initial metabolic changes within the transcriptional regulatory machinery. In this study we fed mice a high fat diet (HFD) for seven weeks followed by additional five weeks of chow, to identify HFD-mediated changes to the hepatic transcriptional program that may persist after weight loss. Mice fed a HFD displayed increased fasting insulin levels, hepatosteatosis and major changes in hepatic gene transcription associated with modulation of H3K27Ac at enhancers, but no significant changes in chromatin accessibility, indicating that HFD-regulated gene transcription is primarily controlled by modulating the activity of pre-established enhancers...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28046109/dietary-yeast-cell-wall-extract-alters-the-proteome-of-the-skin-mucous-barrier-in-atlantic-salmon-salmo-salar-increased-abundance-and-expression-of-a-calreticulin-like-protein
#7
Giulia Micallef, Phillip Cash, Jorge M O Fernandes, Binoy Rajan, John W Tinsley, Ralph Bickerdike, Samuel A M Martin, Alan S Bowman
In order to improve fish health and reduce use of chemotherapeutants in aquaculture production, the immunomodulatory effect of various nutritional ingredients has been explored. In salmon, there is evidence that functional feeds can reduce the abundance of sea lice. This study aimed to determine if there were consistent changes in the skin mucus proteome that could serve as a biomarker for dietary yeast cell wall extract. The effect of dietary yeast cell wall extract on the skin mucus proteome of Atlantic salmon was examined using two-dimensional gel electrophoresis...
2017: PloS One
https://www.readbyqxmd.com/read/28032922/pancreatic-lipase-related-protein-2-is-essential-for-egg-hatching-in-the-brown-planthopper-nilaparvata-lugens
#8
L Xu, H-J Huang, X Zhou, C-W Liu, Y-Y Bao
In this study, we identified a pancreatic lipase-related protein 2 (PLRP2) gene through searching the transcriptome data of the brown planthopper, Nilaparvata lugens, a monophagous rice pest. PLRP2 mRNAs were first isolated in the human pancreas and play an important role in hydrolysis of galactolipids from the diet. Although homologous PLRP2 genes have been identified in many insect species, their physiological functions remain unknown. The present study for the first time reports the functional role of PLRP2 in an insect species...
December 29, 2016: Insect Molecular Biology
https://www.readbyqxmd.com/read/28013147/hexim1-heterozygosity-stabilizes-atherosclerotic-plaque-and-decreased-steatosis-in-apoe-null-mice-fed-atherogenic-diet
#9
Manya Dhar-Mascareno, Inna Rozenberg, Jahangir Iqbal, M Mahmood Hussain, Daniel Beckles, Eduardo Mascareno
Hexim-1 is an inhibitor of RNA polymerase II transcription elongation. Decreased Hexim-1 expression in animal models of chronic diseases such as left ventricular hypertrophy, obesity and cancer triggered significant changes in adaptation and remodeling. The main aim of this study was to evaluate the role of Hexim1 in lipid metabolism focused in the progression of atherosclerosis and steatosis. We used the C57BL6 apolipoprotein E (ApoE null) crossed bred to C57BL6Hexim1 heterozygous mice to obtain ApoE null - Hexim1 heterozygous mice (ApoE-HT)...
December 21, 2016: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/27999286/testosterone-deficiency-induces-changes-of-the-transcriptomes-of-visceral-adipose-tissue-in-miniature-pigs-fed-a-high-fat-and-high-cholesterol-diet
#10
Lifan Zhang, Yueqin Cai, Shengjuan Wei, Yun Ling, Liang Zhu, Dongfeng Li, Zhaowei Cai
Testosterone deficiency causes fat deposition, particularly in visceral fat, and its replacement might reverse fat accumulation, however, the underlying mechanisms of such processes under diet-induced adiposity are largely unknown. To gain insights into the genome-wide role of androgen on visceral adipose tissue (VAT), RNA-Seq was used to investigate testosterone deficiency induced changes of VAT in miniature pigs fed a high-fat and high-cholesterol (HFC) diet among intact male pigs (IM), castrated male pigs (CM), and castrated male pigs with testosterone replacement (CMT) treatments...
December 16, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27981604/malondialdehyde-epitopes-are-sterile-mediators-of-hepatic-inflammation-in-hypercholesterolemic-mice
#11
Clara Jana-Lui Busch, Tim Hendrikx, David Weismann, Sven Jäckel, Sofie M A Walenbergh, André F Rendeiro, Juliane Weißer, Florian Puhm, Anastasiya Hladik, Laura Göderle, Nikolina Papac-Milicevic, Gerald Haas, Vincent Millischer, Saravanan Subramaniam, Sylvia Knapp, Keiryn L Bennett, Christoph Bock, Christoph Reinhardt, Ronit Shiri-Sverdlov, Christoph J Binder
BACKGROUND AND RATIONALE: Diet-related health issues such as non-alcoholic fatty liver disease and cardiovascular disorders are known to have a major inflammatory component. However, the exact pathways linking diet-induced changes e.g. hyperlipidemia, and the ensuing inflammation have remained elusive so far. MAIN RESULTS: We identified biological processes related to innate immunity and oxidative stress as prime response pathways in livers of Ldlr(-/-) mice on Western-type diet using RNA sequencing and in silico functional analyses of transcriptome data...
December 16, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/27966600/gene-network-analysis-identifies-rumen-epithelial-cell-proliferation-differentiation-and-metabolic-pathways-perturbed-by-diet-and-correlated-with-methane-production
#12
Ruidong Xiang, Jody McNally, Suzanne Rowe, Arjan Jonker, Cesar S Pinares-Patino, V Hutton Oddy, Phil E Vercoe, John C McEwan, Brian P Dalrymple
Ruminants obtain nutrients from microbial fermentation of plant material, primarily in their rumen, a multilayered forestomach. How the different layers of the rumen wall respond to diet and influence microbial fermentation, and how these process are regulated, is not well understood. Gene expression correlation networks were constructed from full thickness rumen wall transcriptomes of 24 sheep fed two different amounts and qualities of a forage and measured for methane production. The network contained two major negatively correlated gene sub-networks predominantly representing the epithelial and muscle layers of the rumen wall...
December 14, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27941836/rna-interference-a-promising-biopesticide-strategy-against-the-african-sweetpotato-weevil-cylas-brunneus
#13
Olivier Christiaens, Katterinne Prentice, Ine Pertry, Marc Ghislain, Ana Bailey, Chuck Niblett, Godelieve Gheysen, Guy Smagghe
The African sweetpotato weevil Cylas brunneus is one of the most devastating pests affecting the production of sweetpotatoes, an important staple food in Sub-Saharan Africa. Current available control methods against this coleopteran pest are limited. In this study, we analyzed the potential of RNA interference as a novel crop protection strategy against this insect pest. First, the C. brunneus transcriptome was sequenced and RNAi functionality was confirmed by successfully silencing the laccase2 gene. Next, 24 potential target genes were chosen, based on their critical role in vital biological processes...
December 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27933524/a-suite-of-tools-for-biologists-that-improve-accessibility-and-visualization-of-large-systems-genetics-datasets-applications-to-the-hybrid-mouse-diversity-panel
#14
Christoph D Rau, Mete Civelek, Calvin Pan, Aldons J Lusis
In this chapter we address the recent explosion in large multilevel population studies such as the METSIM study in humans as well as large panels of animal models such as the Hybrid Mouse Diversity Panel or the BXD set of recombinant inbred strains. These studies have harnessed the increasing affordability of large-scale high-throughput profiling to gather massive quantities of data. These datasets, spread across different -omics levels (genome, transcriptome, etc.), different tissues (e.g. heart, plasma, bone) and different environmental factors (e...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27930681/transcriptomic-changes-in-liver-of-young-bulls-caused-by-diets-low-in-mineral-and-protein-contents-and-supplemented-with-n-3-fatty-acids-and-conjugated-linoleic-acid
#15
Sara Pegolo, Alessio Cecchinato, Núria Mach, Massimiliano Babbucci, Marianna Pauletto, Luca Bargelloni, Stefano Schiavon, Giovanni Bittante
The aim of the present study was to identify transcriptional modifications and regulatory networks accounting for physiological and metabolic responses to specific nutrients in the liver of young Belgian Blue × Holstein bulls using RNA-sequencing. A larger trial has been carried out in which animals were fed with different diets: 1] a conventional diet; 2] a low-protein/low-mineral diet (low-impact diet) and 3] a diet enriched in n-3 fatty acids (FAs), conjugated linoleic acid (CLA) and vitamin E (nutraceutical diet)...
2016: PloS One
https://www.readbyqxmd.com/read/27927713/high-fibre-diet-and-acetate-supplementation-change-the-gut-microbiota-and-prevent-the-development-of-hypertension-and-heart-failure-in-doca-salt-hypertensive-mice
#16
Francine Z Marques, Erin M Nelson, Po-Yin Chu, Duncan Horlock, April Fiedler, Mark Ziemann, Jian K Tan, Sanjaya Kuruppu, Niwanthi W Rajapakse, Assam El-Osta, Charles R Mackay, David M Kaye
BACKGROUND: -Dietary intake of fruit and vegetables is associated with lower incidence of hypertension, but the mechanisms involved have not been elucidated. Here we evaluated the effect of a high fibre diet and supplementation with the short-chain fatty acid (SFCA) acetate on the gut microbiota and the prevention of cardiovascular disease. METHODS: -Gut microbiome, cardiorenal structure/function and blood pressure were examined in sham and mineralocorticoid-excess treated mice with a control diet, high fibre diet or acetate supplementation...
December 7, 2016: Circulation
https://www.readbyqxmd.com/read/27916986/pharmacological-modulation-of-lmna-srsf1-dependent-splicing-abrogates-diet-induced-obesity-in-mice
#17
J Santo, C Lopez-Herrera, C Apolit, Y Bareche, L Lapasset, C Chavey, S Capozi, F Mahuteau, R Najman, P Fornarelli, I C Lopez-Mejía, G Béranger, F Casas, E-Z Amri, B Pau, D Scherrer, J Tazi
BAKGROUND/OBJECTIVES: Intense drug discovery efforts in the metabolic field highlight the need for novel strategies for the treatment of obesity. Alternative splicing (AS) and/or polyadenylation enable the LMNA gene to express distinct protein isoforms that exert opposing effects on energy metabolism and lifespan. Here we aimed to use the splicing factor SRSF1 that contribute to the production of these different isoforms as a target to uncover new anti-obesity drug. SUBJECTS/METHODS: Small molecules modulating SR protein activity and splicing, were tested for their abilities to interact with SRSF1 and to modulate LMNA (AS)...
December 5, 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27898676/dietary-butyrate-helps-to-restore-the-intestinal-status-of-a-marine-teleost-sparus-aurata-fed-extreme-diets-low-in-fish-meal-and-fish-oil
#18
Itziar Estensoro, Gabriel Ballester-Lozano, Laura Benedito-Palos, Fabian Grammes, Juan Antonio Martos-Sitcha, Liv-Torunn Mydland, Josep Alvar Calduch-Giner, Juan Fuentes, Vasileios Karalazos, Álvaro Ortiz, Margareth Øverland, Ariadna Sitjà-Bobadilla, Jaume Pérez-Sánchez
There is a constant need to find feed additives that improve health and nutrition of farmed fish and lessen the intestinal inflammation induced by plant-based ingredients. The objective of this study was to evaluate the effects of adding an organic acid salt to alleviate some of the detrimental effects of extreme plant-ingredient substitution of fish meal (FM) and fish oil (FO) in gilthead sea bream diet. Three experiments were conducted. In a first trial (T1), the best dose (0.4%) of sodium butyrate (BP-70 ®NOREL) was chosen after a short (9-weeks) feeding period...
2016: PloS One
https://www.readbyqxmd.com/read/27892926/dual-specificity-phosphatase-6-deficiency-regulates-gut-microbiome-and-transcriptome-response-against-diet-induced-obesity-in-mice
#19
Jhen-Wei Ruan, Sarah Statt, Chih-Ting Huang, Yi-Ting Tsai, Cheng-Chin Kuo, Hong-Lin Chan, Yu-Chieh Liao, Tse-Hua Tan, Cheng-Yuan Kao
The gut microbiota plays profound roles in host metabolism and the inflammatory response associated with the development of obesity. Dusp6-deficient mice have been shown to be resistant to diet-induced obesity, but the mechanism behind this remains unclear. 16S ribosomal RNA gene analysis demonstrated that dusp6-deficient mice harbour unique gut microbiota with resistance to diet-induced-obesity-mediated alteration of the gut microbiome. Using a germ-free mouse model, we found that faecal/gut microbiota derived from dusp6-deficient mice significantly increased energy expenditure and reduced weight gain in recipient wild-type mice fed on a high-fat diet...
November 28, 2016: Nature Microbiology
https://www.readbyqxmd.com/read/27881825/effects-of-a-gut-pathobiont-in-a-gnotobiotic-mouse-model-of-childhood-undernutrition
#20
Vitas E Wagner, Neelendu Dey, Janaki Guruge, Ansel Hsiao, Philip P Ahern, Nicholas P Semenkovich, Laura V Blanton, Jiye Cheng, Nicholas Griffin, Thaddeus S Stappenbeck, Olga Ilkayeva, Christopher B Newgard, William Petri, Rashidul Haque, Tahmeed Ahmed, Jeffrey I Gordon
To model how interactions among enteropathogens and gut microbial community members contribute to undernutrition, we colonized gnotobiotic mice fed representative Bangladeshi diets with sequenced bacterial strains cultured from the fecal microbiota of two 24-month-old Bangladeshi children: one healthy and the other underweight. The undernourished donor's bacterial collection contained an enterotoxigenic Bacteroides fragilis strain (ETBF), whereas the healthy donor's bacterial collection contained two nontoxigenic strains of B...
November 23, 2016: Science Translational Medicine
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